干旱区生态环境知识资源中心(Arid): Modeling the influence of small reservoirs on hydrological drought propagation in space and time

Arid

DOI	10.1016/j.jhydrol.2024.130640
	Modeling the influence of small reservoirs on hydrological drought propagation in space and time
	Colombo, P.; Neto, G. G. Ribeiro; Costa, A. C.; Mamede, G. L.; Van Oel, P. R.
通讯作者	Colombo, P
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2024
卷号	629
英文摘要	To increase drought preparedness in semi-arid regions across the world many small and medium reservoirs have been built in recent decades. Together these reservoirs form a Dense Reservoir Network (DRN) and its presence generates numerous challenges for water management. Most of the reservoirs that constitute the network are unmonitored and unregistered, posing questions on their cumulative effects on strategic reservoirs and water distribution at watershed scale. Their influence on hydrological drought propagation is thus largely unexplored. The objective of this study is then to assess DRN effects on droughts both in time and space. A modelinganalytical framework is proposed to achieve this goal. A mesoscale semi-distributed hydrological model was utilized to simulate both a network of large strategic reservoirs and a DRN in a large-scale tropical semiarid watershed. To investigate the effects in time and space generated by the network's presence, the differences between multiple network scenarios were analyzed. Results show that the presence of the DRN accelerates the transition from meteorological to hydrological drought phases by 20% on average and slows down the recharge in strategic reservoirs by 25%, leading to a 12% increase of periods in hydrological drought conditions in a highly strategic basin and 26% without strategic reservoirs. This is because the DRN increases the hydrological dysconnectivity at catchment scale, reducing inflow to strategic reservoirs. In space, the DRN shifts upstream the basin's water storage capacity by 8%, but when both large and small reservoirs are present the stored volume distribution behavior is not straightforward. The findings confirm the need to consider the effect of small reservoirs when developing and implementing drought management policies and reservoir-management approaches at regional scale.
英文关键词	Drought Water storage Small reservoirs Human impacts Hydrological drought Water management
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001164187500001
WOS关键词	SURFACE-WATER ; FARM DAMS ; CLIMATE ; IMPACT ; SUSTAINABILITY ; SIMULATION ; REGION ; SWAT
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404546
推荐引用方式 GB/T 7714	Colombo, P.,Neto, G. G. Ribeiro,Costa, A. C.,et al. Modeling the influence of small reservoirs on hydrological drought propagation in space and time[J],2024,629.
APA	Colombo, P.,Neto, G. G. Ribeiro,Costa, A. C.,Mamede, G. L.,&Van Oel, P. R..(2024).Modeling the influence of small reservoirs on hydrological drought propagation in space and time.JOURNAL OF HYDROLOGY,629.
MLA	Colombo, P.,et al."Modeling the influence of small reservoirs on hydrological drought propagation in space and time".JOURNAL OF HYDROLOGY 629(2024).